2105004111 has 32 divisors (see below), whose sum is σ = 3304504320. Its totient is φ = 1166731776.

The previous prime is 2105004089. The next prime is 2105004113. The reversal of 2105004111 is 1114005012.

It is a happy number.

It is not a de Polignac number, because 2105004111 - 2¹¹ = 2105002063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105004113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257830 + ... + 265868.

It is an arithmetic number, because the mean of its divisors is an integer number (103265760).

Almost surely, 2^2105004111 is an apocalyptic number.

2105004111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2105004111 is a deficient number, since it is larger than the sum of its proper divisors (1199500209).

2105004111 is a wasteful number, since it uses less digits than its factorization.

2105004111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8423.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 2105004111 is about 45880.3237891800. The cubic root of 2105004111 is about 1281.5955264146.

Adding to 2105004111 its reverse (1114005012), we get a palindrome (3219009123).

Subtracting from 2105004111 its reverse (1114005012), we obtain a palindrome (990999099).

The spelling of 2105004111 in words is "two billion, one hundred five million, four thousand, one hundred eleven".